30012202122221 has 16 divisors (see below), whose sum is σ = 32939435870208. Its totient is φ = 27118138114800.

The previous prime is 30012202122173. The next prime is 30012202122271. The reversal of 30012202122221 is 12222120221003.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30012202122221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30012202122193 and 30012202122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30012202122271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21103736 + ... + 22480926.

It is an arithmetic number, because the mean of its divisors is an integer number (2058714741888).

Almost surely, 2^{30012202122221} is an apocalyptic number.

It is an amenable number.

30012202122221 is a deficient number, since it is larger than the sum of its proper divisors (2927233747987).

30012202122221 is a wasteful number, since it uses less digits than its factorization.

30012202122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389232.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 30012202122221 its reverse (12222120221003), we get a palindrome (42234322343224).

The spelling of 30012202122221 in words is "thirty trillion, twelve billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty-one".